BATRACHIAANOURA. 23. 



All the specimens of this species were collected on Puget's Sound, 

 Oregon. 



Plate II, fig. 13, represents Rana j^retiosa, size of life. 



Fig. 14, a profile view of the head. 



Eig. 15, the head, seen from above. 



Fig. 16, the head, from beneath. 



Fig. 17, under surface of the left hand. 



Fig. 18, under surface of the left foot. 



3. Rana drattoni, B. & G. 



(Plate II, figs. 19-24.) 



Car. spec. — Tympano ohlongo et amplo. Palmis et plantls planis ; 

 digitis pahnarum robustis. Gruribus permagnis. Femori et tibia 

 tantummodo non ceqiialibiis, et dimidiam corporis longitudinem fere 

 attingentibus. Plantarum digitis ad articulum terminalem usque 

 pahnatis. Oblongo et coriieo processu in base primi plantarum digiti, 

 nee non tuberculo circulari et rudimentari in base tarsi ex adverso 

 longissimi plantarum digiti. Cute supra minutissime granulata. 

 Plicatura glandulari super oris angidum, et ampla carina in 

 utroque latere. 



Spec. Char.— Tympanum oblong and rather large. Hands and feet 

 underneath smooth ; fingers stoutish. Legs very large. Femur 

 and tibia nearly equal, about half the length of the body. Toes 

 webbed to the terminal joints. An oblong horny process at the 

 base of the first toe, and a round rudimentary tubercle at the base 

 of the tarsus, opposite the longest toe. Skin finely granular above. 

 A glandular fold above the angle of the mouth, and a broad ridge 

 on each side. 



SYN.—Rana draytonii, B. & Gr. Proc. Acad. Nat. Sci. Philad. VI, 1852, 174. 



Observ. By its hind legs this species is intermediate between R. 



aurora and R. pretiosa, since these organs are very much developed, as 

 is the case in the former, and the toes webbed almost to their tips, as 

 in the latter. 



